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Variable stroke engine and working method thereof

A four-stroke engine and engine technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve problems such as unqualified and obstacles to put into practice

Inactive Publication Date: 2007-12-19
清华大学苏州汽车研究院(吴江) +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It should be pointed out that this second scheme achieves different cycle patterns on the same cylinder, so there is a time when the two-stroke machine works alone. substandard issues will seriously hinder the implementation of such programs

Method used

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  • Variable stroke engine and working method thereof
  • Variable stroke engine and working method thereof
  • Variable stroke engine and working method thereof

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Embodiment Construction

[0053] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0054] Fig. 1 is the basic pipeline and air valve diagram of the present invention. The two-stroke intake pipe 1 shown in Fig. 1 obtains the fresh air blown into the cylinder from the intake pump of the exhaust gas turbocharger, and guides it to the two two-stroke cylinders, after the gas and fuel are mixed and burned The exhaust gas is discharged from the two-stroke exhaust pipe 20 shown in accompanying drawing 2, first enters a unified mixing chamber 10 in Fig. 2, and then passes through the distribution of the EGR distribution valve 11 in Fig. 2, and part of it enters the exhaust gas turbocharger in Fig. 2 The power input end 22 of the compressor drives the turbine, and the other part enters the intake air of the four-stroke cylinder to participate in the combustion in the cylinder, so as to realize exhaust gas recirculation and improv...

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Abstract

This invention relates to a variable stroke engine, in addition to its working method, which belongs to vehicle engine technique field. The engine comprises six cylinders, EGR, exhaust-gas turbocharger system, four strokes discharge distributing valve, exhaust duct, bent axle piston and electrical controlling unit. when working, it needs to decide whether the two stroke cylinders join to work with the jar cutting technique according to different power, making the engine switch in different working condition; the six cylinders will bedding-in work through each inlet distribution valve to increase pressure and power output. Said invention can be used in transporting vehicle such as tank armored vehicle, machineshop truck needs to provide large power output and so on.

Description

technical field [0001] The invention relates to a combined engine and its control, which belongs to the technical field of vehicle engines in the direction of mechanical manufacturing in power engineering and engineering thermophysics. Background technique [0002] Common internal combustion engines can be divided into two-stroke internal combustion engines and four-stroke internal combustion engines according to different cycle modes. The two-stroke internal combustion engine piston completes one cycle up and down each time, the upward behavior is the intake compression stroke, and the downward behavior is the power exhaust stroke. The piston of a four-stroke internal combustion engine completes a cycle twice up and down. First, the piston goes down for the intake stroke, then the piston goes up for the compression stroke, then the piston goes down again to complete the power stroke, and finally the piston goes up for the exhaust stroke. Both cycle forms of internal combus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B75/02F02B75/18F02B75/32F02D17/02F02D21/08
Inventor 李哲郭允帅石金
Owner 清华大学苏州汽车研究院(吴江)
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